<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
     <form action="<!--{:U('user/add','','',true)}-->" method="post">
       <input type="text" name="add"/> <input type="submit" name="submit" value="提交"/>
      </form>
</body>
</html>